Thomas family, of Llanbradach and Ystrad Mynach
estates, records [c. 1528]-[c. 1953] "John Thomas, of Llanbradach, Glamorgan, was
succeeded by his son William Thomas (d. pre-1664), who married Joan Llewelyn of
Rhydlafar in the same county. Their son, Thomas Thomas (fl. 1664) of Llanbradach and Rhydlafar, was succeeded by his son,
William Thomas (fl. 1668-1675). His son, Thomas Thomas (d. 1720), of Llanbradach was succeeded by his son, James Thomas of
Llanbradach who died in 1731 without issue. ..........................................."

Cardiff Colleries Ltd, Llanbradach records 1860-1955 "The sinking of the first pit (No. 1 pit) at Llanbradach Colliery, Glamorgan, was begun in 1893, by
the Cardiff Collieries Ltd; a second pit (No. 2 pit) was added the following
year. During the early 1920s, a third pit (No. 3 pit) was sunk to mine the Nos.
2 & 3 seams. In 1914, 2,330 men were employed at this colliery, and total
output reached its peak in 1935, when....................................."